update commitgraph information

Author: Byron

README.md

@@ -171,9 +171,17 @@ become available.
   * handle git index files for primary use by the git-repository while crafting new commits
   * [ ] API documentation with examples
 
-### git-bundle
-  * [ ] create a bundle from an archive
-  * [ ] extract a branch from a bundle into a repository
+### git-commitgraph
+  * [x] read-only access
+     * [x] Graph lookup of commit information to obtain timestamps, generation and parents, and extra edges
+     * [ ] Bloom filter index
+     * [ ] Bloom filter data
+  * [ ] create and update graphs and graph files
+  * [ ] API documentation with examples
+
+### git-config
+  * read and write git configuration files
+  * [ ] API documentation with examples
 
 ### git-repository
   * [x] initialize
@@ -196,15 +204,9 @@ become available.
   * [ ] Use _Commit Graph_ to speed up certain queries
   * [ ] API documentation with examples
 
-### git-commitgraph
-  * [x] read-only access
-     * [x] Graph lookup of commit information to obtain timestamps, generation and parents
-  * [ ] create and update graphs and graph files
-  * [ ] API documentation with examples
-
-### git-config
-  * read and write git configuration files
-  * [ ] API documentation with examples
+### git-bundle
+  * [ ] create a bundle from an archive
+  * [ ] extract a branch from a bundle into a repository
 
 ### git-ref
   * Handle symbolic references and packed references

git-commitgraph/src/file/commit.rs

@@ -39,7 +39,7 @@ quick_error! {
 }
 
 // Note that git's commit-graph-format.txt as of v2.28.0 gives an incorrect value 0x0700_0000 for
-// NO_PARENT.
+// NO_PARENT. Fixed in https://github.com/git/git/commit/4d515253afcef985e94400adbfed7044959f9121 .
 const NO_PARENT: u32 = 0x7000_0000;
 const EXTENDED_EDGES_MASK: u32 = 0x8000_0000;